When I recently started to look a little bit into the possibilities of AI, the thought of whether ChatGPT could help me quickly in some old Projects came up.

The task:
In the future, the Gorgy clocks should obtain the exact time via an existing 2.4GHz WLAN. Necessary technical interventions in the clocks should be as simple as possible, inexpensive and, in particular, reversible at any time.

The reliable detection of human presence is not easy to achieve. But there is an interesting very small sensor HLK-LD2410(B) for this purpose

The open source SDR device HackRF One , developed and produced at Great Scott Gadgets,is a great and universal lab device as a receiver or transmitter between 1 MHz and 6 GHz. However, confronting the dynamic range of the 8bit AD converters with the extreme signal levels at a real receiving antenna site can quickly […]

My dear wife asked me to provide the kitchen spots with a “non-Alexa” switch in order to be able to turn on the lights even with floury or sticky fingers.

When experimenting with ESP32 modules, especially the ESP32 CAMs, I wish I had a little more WIFI range reserve.This could be achieved by adding an external antenna – but only a few modules are prepared for the connection of an external antenna. The resulting financial and mechanical outlay is also no longer negligible and may […]

There is not always a necessity for highly accurate and expensive measuring devices to determine indoor air quality. A rough reading and limit monitoring can also be very helpful if you simply want to know when it is appropriate to ventilate an intensively used room. Such a device becomes even more useful when its simple […]

A very simple analog circuit for levitating small objects, which is the essence of many enlightening technical discussions and the result of experiments with some analog or digital prototypes. The analog electronics now even fit in the housing of a modified “Finder”-relay! I wrote <here> and at Elektor Labs about my experiments with my magnetic […]

A bit of ANNEX32-BASIC-code to control an ESP32 based pan/tilt servo CAM. No ARDUINO-Code, no compiling … just run the interpreter on the ESP32-device and develop, change customize your BASIC-script with your browser in the web interface of the device. My intention for the hardware and software was: “Keep it simple”. So I stacked two […]

In the two articles “Magnetic Levitation – The Easy Way” and “Magnetic Levitation – The digital Way” I described how to build a circuit that can keep a small object well in levitation. Only readily available components should be needed for both set-ups and the electromagnet should be as simple as possible to produce. ############# […]